bawn

But these round hills and square bawnes, which you see so strongly trenched and throwne up

The cattle, therefore, would be brought into the bawn at night, as is stated by the early 17th-century writer Fynes Moryson who wrote that the Irish cattle “eat only by day, and then are brought at evening within the bawns of castles, where they stand or lie all night in a dirty yard without so much as a lock of hay.”